A Critical Examination of Cosmic Expansion and the Present-Day Origin of the CMB

[Gibsense]

If this is true, we have already fallen into 1 BH, or at least crossed the event horizon of a BH. With the Milky Way residing within the event horizon of the BH Sagittarius, wouldn't we perceive the universe as expanding? As well as the space between galaxies that aren't gravitationally bound. Maybe the limit that will add space between galaxies is that the EHs of those BHs residing near the center of galaxies have intersected each other. Making those galaxies gravitationally bound.

The amount of mass in the universe (I may be out of date with this) is very close to being able, by gravity, to contract the universe. That is the whole thing would become gravitationally bound. This would presumably produce an event horizon to define its unbound limits. If we imagine, as a thought experiment, an outside observer looking at the event horizon, would they be able to differentiate it from a black hole? Quite a thought CryptoCraig

In summary, if you had a sufficiently symmetric and static situation where the total mass of the universe produced an event horizon, an observer located outside that horizon would see gravitational effects identical to those of a black hole of equivalent mass.